certificates of top ten domestic brands, Deputy Director-General unit of frequency inverters association of China : All the materials we source outside are strictly inspected. And we prepare aging process with several hours. Thus the unqualified materials will be discarded.

The assembly process of our factory is strictly controlled under the international standard, such as ISO9001:2000. After the products are assembled, our products will be tested with the load (for example, ac drive) and without the load.

About 24-hours aging on the finished products will guarantee our clients to get the qualified products.